Display device

Abstract

To provide a display device capable of reducing the height thereof.SOLUTION: A display device includes a display panel, housing constituting a part of a frame part of the display panel and having a first penetration hole extending in a thickness direction of the display panel, and a substrate disposed along a lateral direction of the display panel and a depth direction from a front surface side of the display panel to a back surface side in the housing and having a second penetration hole extending in a vertical direction of the display panel, a microphone fixed to the substrate so as to face the second penetration hole, and a sealing member provided in contact with the housing and the substrate and forming a flow channel of air from an external space to the microphone through the first penetration hole and the second penetration hole.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] As disclosed in Patent Document 1 below, for example, a lower, horizontally extending portion of a frame surrounding the periphery of a display panel of a display device is provided with a sound collection unit that collects sound from the front side of the display panel. This sound collection unit has a microphone inside its housing. The microphone collects sound that propagates from outside the housing through a through-hole in the front side wall of the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-71919 Summary of the Invention [Problem to be solved by the invention]

[0004] In the sound collection unit disclosed in Patent Document 1, the substrate is installed parallel to the display panel. In other words, the width direction of the substrate is parallel to the height direction of the display panel. In this case, the height of the housing of the sound collection unit must be greater than the width of the substrate. Therefore, the height of the lower, horizontally extending portion of the frame formed along the periphery of the display panel of the display device cannot be reduced. Therefore, the height of the display panel cannot be reduced.

[0005] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide a display device that can reduce the height of a display panel. [Means for solving the problem]

[0006] The display device of the present disclosure comprises a display panel, a housing that forms part of the frame of the display panel and has a first through hole extending in the thickness direction of the display panel, a substrate that is arranged within the housing along the width of the display panel and along the depth direction from the front side to the back side of the display panel and has a second through hole that extends in the vertical direction of the display panel, a microphone fixed to the substrate so as to face the second through hole, and a sealing member that is arranged in contact with the housing and the substrate and forms a flow path for air from external space to the microphone via the first through hole and the second through hole. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view of a display device according to a first embodiment. [Figure 2] 2 is a partial cross-sectional view of the display device of the first embodiment, taken along line II-II in FIG. 1. FIG. [Figure 3] FIG. 2 is a perspective view of the sound collection unit of the first embodiment. [Figure 4] FIG. 2 is a plan view of the sound collection unit of the first embodiment. [Figure 5] FIG. 2 is a partial plan view of the sound collection unit of the first embodiment. [Figure 6] FIG. 2 is a partial front view of the sound collection unit of the first embodiment. [Figure 7] 2 is a partial perspective cross-sectional view of the sound collection unit of the first embodiment. FIG. [Figure 8] FIG. 2 is a partial perspective view of the sound collection unit of the first embodiment. [Figure 9] 9 is a partial vertical cross-sectional view of the sound collection unit of the first embodiment, taken along line IX-IX in FIGS. 5 and 6. FIG. [Figure 10] 7 is a partial cross-sectional view of the sound collection unit of the first embodiment, taken along line XX in FIG. 6. FIG. [Figure 11] FIG. 2 is a first perspective view of the sealing member according to the first embodiment. [Figure 12] FIG. 4 is a second perspective view of the sealing member according to the first embodiment. [Figure 13]FIG. 2 is a plan view of the sealing member according to the first embodiment. [Figure 14] FIG. 3 is a bottom view of the sealing member of the first embodiment. [Figure 15] 14 is a longitudinal cross-sectional view of the sealing member of the first embodiment, taken along line XV-XV of FIG. 13. FIG. [Figure 16] FIG. 10 is a partial vertical cross-sectional view of a sound collection unit according to a modified example of the first embodiment. [Figure 17] FIG. 10 is a perspective view of a part of the lower side of the frame of the second embodiment. [Figure 18] FIG. 10 is a perspective view of a sound collection unit according to a second embodiment. [Figure 19] FIG. 10 is a plan view of the sound collection unit of the second embodiment. [Figure 20] FIG. 10 is a partial plan view of the sound collection unit of the second embodiment. [Figure 21] FIG. 10 is a partial front view of the sound collection unit of the second embodiment. [Figure 22] FIG. 10 is a partial perspective cross-sectional view of the sound collection unit of the second embodiment. [Figure 23] FIG. 10 is a partial perspective view of the sound collection unit of the second embodiment. [Figure 24] 24 is a partial vertical cross-sectional view of the sound collection unit of the second embodiment, taken along line XXIV-XXIV in FIGS. 20 and 21. FIG. [Figure 25] 22 is a partial cross-sectional view of the sound collection unit of the second embodiment, taken along line XXV-XXV of FIG. 21. FIG. [Figure 26] FIG. 11 is a first perspective view of a sealing member according to a second embodiment. [Figure 27] FIG. 10 is a second perspective view of the sealing member according to the second embodiment. [Figure 28] FIG. 10 is a plan view of a sealing member according to a second embodiment. [Figure 29] FIG. 10 is a bottom view of the sealing member of the second embodiment. [Figure 30] 29 is a longitudinal cross-sectional view of the sealing member of the second embodiment, taken along the line XXX-XXX in FIG. 28. FIG. [Figure 31] FIG. 11 is a plan view of a substrate according to a third embodiment. [Figure 32]FIG. 11 is a bottom view of the substrate of the third embodiment. [Figure 33] FIG. 11 is a plan view of a push switch provided on a substrate according to a third embodiment. [Figure 34] FIG. 11 is a cross-sectional view of a push switch provided on a substrate according to a third embodiment. [Figure 35] FIG. 11 is a cross-sectional view of a slide switch provided on a substrate according to a third embodiment. [Figure 36] FIG. 11 is a perspective view of a slide switch provided on a substrate according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, display devices according to embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or equivalent elements are designated by the same reference numerals, and redundant description will not be repeated.

[0009] (Embodiment 1) A display device 100 according to the first embodiment will be described with reference to FIGS.

[0010] FIG. 1 is a front view of a display device 100 according to the present embodiment. FIG. 2 is a partial cross-sectional view of the display device 100 according to the present embodiment. FIGS. 3 and 4 are a perspective view and a plan view, respectively, of a sound collection unit 21 according to the present embodiment. FIGS. 5 to 10 are a partial plan view, a partial front view, a partial perspective cross-sectional view, a partial perspective view, a partial vertical cross-sectional view, and a partial horizontal cross-sectional view, respectively, of a sound collection unit 21 according to the present embodiment. FIGS. 11 to 15 are a first perspective view, a second perspective view, a plan view, a bottom view, and a vertical cross-sectional view of a sealing member 60 according to the present embodiment.

[0011] The display device 100 of this embodiment includes a display panel 10 and a frame 20. The display panel 10 is a horizontally long rectangular flat plate. However, the shape of the display panel 10 is not particularly limited, and may be any shape, such as a circular or elliptical flat plate, or a shape with a curved screen.

[0012] The frame portion 20 is formed along the outer periphery of the display panel 10. The frame portion 20 has a shape consisting of four parts extending along the four sides of a rectangle, but may have any shape as long as it surrounds the outer periphery of the display panel 10. In the present embodiment, the lower, horizontally extending part of the frame portion 20 includes the sound collection unit 21.

[0013] The sound collection unit 21 includes a container-shaped housing 40 and a substrate 30 provided inside the housing 40. The thickness direction of the substrate 30 and the height direction of the housing 40 are parallel to each other. The height direction of the housing 40 is the height direction of the display panel 10, in other words, the height direction of the display device 100. The thickness direction of the substrate 30 is a direction perpendicular to the two opposing main surfaces of the substrate 30.

[0014] In this embodiment, the display panel 10 is set along an imaginary plane including the vertical and horizontal directions. Therefore, the substrate 30 is set parallel to the horizontal plane. However, the orientation of the display panel 10 and the orientation of the substrate 30 may be any as long as the screen 11 of the display panel 10 and the main surface 30A of the substrate 30 are arranged so that the width of the frame portion 20 in the height direction of the display panel 10 is minimized.

[0015] The housing 40 constitutes a part of the frame 20 of the display panel 10. The housing 40 is made of resin and has insulating properties. The housing 40 has a first through hole 41 extending in the thickness direction of the display panel 10. The thickness direction of the display panel 10 refers to the depth direction from the front side to the rear side of the display panel 10. The front side of the display panel 10 is the side on which the screen 11 is provided, and the rear side of the display panel 10 is the side behind the side on which the screen 11 is provided. In other words, the first through hole 41 is formed along the front-to-rear direction of the display device 100. The first through hole 41 is provided in the front side wall of the housing 40. The first through hole 41 is cylindrical. The first through hole 41 surrounds a space and is configured to allow sound waves to pass through the air.

[0016] The substrate 30 is a printed wiring board on which various electronic components are mounted and electrically connected by printed wiring. The substrate 30 is disposed within the housing 40 along an imaginary plane including the horizontal and thickness directions of the display panel 10. The substrate 30 has a second through-hole 31 extending in the vertical direction of the display panel 10. In other words, the substrate 30 is disposed along a horizontal plane. On the other hand, the display panel 10 is disposed along an imaginary plane including a substantially vertical direction, so the substrate 30 and the display panel 10 are disposed so as to intersect at a substantially right angle.

[0017] In other words, in this embodiment, the substrate 30 is not disposed parallel to the display panel 10 within the housing 40. As described above, the substrate 30 is disposed within the housing 40 along an imaginary plane including the width and thickness directions of the display panel 10. This allows the height of the housing 40 to be reduced. This also allows the height of the frame 20 to be reduced. As a result, the height of the display device 100 excluding the stand 120, i.e., the height of the display panel 10, can be reduced. Furthermore, the height of the sound collection unit 21, which is disposed outside the frame 20 surrounding the display panel 10 and protrudes forward from the lower side of the display panel 10, is reduced. This reduces the protrusion of the lower portion of the display panel 10, thereby improving the overall design of the display device 100. Furthermore, the housing 40 covering the sound collection unit 21 can be made smaller, thereby reducing the weight of the entire display device 100.

[0018] The microphone 50 converts sound waves propagating through the air into electrical signals. The microphone 50 is mounted on the main surface 30A of the substrate 30. The microphone 50 is fixed to the substrate 30 so as to face the second through-hole 31. Therefore, the microphone 50 receives sound waves propagated from the external space via the first through-hole 41, the through-hole 61, and the second through-hole 31, and converts the received sound waves into electrical signals.

[0019] The sealing member 60 has a through hole 61, a protrusion 62, and a recess 63. The through hole 61 constitutes part of the flow path of sound waves. In other words, the through hole 61 forms part of the air flow path 90 between the first through hole 41 and the second through hole 31. The protrusion 62 comes into close contact with the microphone 50 and functions to prevent a gap from being formed between the microphone 50 and the sealing member 60. The recess 63 receives part of a screw 70 for fixing the sealing member 60 to the substrate 30.

[0020] The sealing member 60 is provided so as to contact the housing 40 and the substrate 30. The sealing member 60 forms a flow path 90 for air that passes from the external space to the microphone 50 via the first through-hole 41, the through-hole 61, and the second through-hole 31. The sealing member 60 is preferably made of an elastic material, such as rubber.

[0021] The sealing member 60 is sandwiched between the substrate 30 and the housing 40 so as to form a gap 95 between the substrate 30 and the housing 40. That is, the microphone 50 is provided on the upper side of the substrate 30, the second through-hole 31 is positioned below the microphone 50, and the gap 95 exists between the lower surface of the substrate 30 and the housing 40. In this case, the air flow path 90 extends from the first through-hole 41 to the second through-hole 31 via the gap 95. Therefore, the air flow path 90 can be formed by utilizing the gap 95 between the substrate 30 and the housing 40. As a result, sound waves generated on the screen 11 side of the display device 100 reach the microphone 50 via the first through-hole 41, the through-hole 61, the gap 95, and the second through-hole 31. Therefore, the microphone 50 can convert sound generated outside the display device 100 into an electrical signal.

[0022] Hook portions 42 are provided on the side walls of the housing 40. The hook portions 42 press the substrate 30 against the bottom and side walls of the housing 40, respectively. As a result, the sealing member 60 is sandwiched between the bottom and side walls of the housing 40 and the lower surface and end surface of the substrate 30, respectively. As a result, the air flow path 90 is maintained in a sealed space.

[0023] The first through hole 41 has a relatively large cross-sectional area compared to the second through hole 31. The air flow path 90 has a tapered shape (part of the through hole 61) that narrows as it approaches the second through hole 31 from the first through hole 41. Therefore, even if the cross-sectional area of ​​the first through hole 41 is made larger than the cross-sectional area of ​​the second through hole 31 to improve the sound collection performance of the microphone 50, it is possible to minimize adverse effects on the propagation of sound waves. More specifically, there is little portion where the cross-sectional area of ​​the air flow path 90 changes significantly between the first through hole 41, which has a relatively large cross-sectional area, and the second through hole 31, which has a relatively small cross-sectional area. In other words, there are many portions where the cross-sectional area of ​​the air flow path 90 between the first through hole 41 and the second through hole 31 changes as continuously as possible. As a result, the shape of the air flow path 90 between the first through hole 41 and the second through hole 31 is prevented from adversely affecting sound collection.

[0024] Furthermore, part of the tapered shape of the air flow path 90 is formed by making part of the sealing member 60 into an inclined surface. Therefore, the shape of the sealing member 60 can be utilized to form the tapered shape.

[0025] The top of the first through-hole 41 is at the same height as the top of the substrate 30 or lower than the top of the substrate 30. This allows the height of the housing 40 to be lower. As a result, by lowering the height of the frame 20, the height of the display device 100 excluding the stand 120, i.e., the height of the display panel 10, can be lowered.

[0026] The air flow path 90 from the first through-hole 41 to the second through-hole 31 has a straight flow path through which sound waves can travel in a straight line (see FIG. 9). Therefore, the generation of turbulence in the flow of sound waves due to the shape of the air flow path 90 is minimized. As a result, the microphone 50 can receive sound waves with little turbulence.

[0027] FIG. 16 is a partial vertical cross-sectional view of a sound collection unit 21 according to a modified example of the present embodiment.

[0028] 16, the tapered shape of the air flow path 90 may be formed by making a part of the housing 40 into an inclined surface 43. This also makes it possible to form the tapered shape by utilizing the shape of the housing 40.

[0029] (Embodiment 2) The display device of the second embodiment will be described with reference to Figures 17 to 28. Note that, in the following, description of the same points as those in the display device of the first embodiment will not be repeated. The display device of the present embodiment differs from the display device of the first embodiment in the following points.

[0030] Fig. 17 is a perspective view of a portion of the lower side of frame portion 20 of this embodiment. Figs. 18 and 19 are a perspective view and a plan view, respectively, of sound collection unit 21 of this embodiment. As can be seen by comparing Fig. 17 with Figs. 18 and 19, in this embodiment, sound collection unit 21 is provided on the lower side of lid portion 22. Also in this embodiment, part of the lower side of frame portion 20 is provided with substrate 30 inside housing 40.

[0031] 20 to 25 are a partial plan view, a partial perspective view, a partial perspective cross-sectional view, a partial perspective view, a partial vertical cross-sectional view, and a horizontal cross-sectional view, respectively, of sound collection unit 21 of the present embodiment. Figures 26 to 28 are a first perspective view, a second perspective view, a plan view, a bottom view, and a vertical cross-sectional view, respectively, of sealing member 60 of the present embodiment.

[0032] In this embodiment, the front side of the housing 40 includes a step portion 44. The step portion 44 is a portion that is lower than the other portions of the bottom of the housing 40. A sealing member 60 is inserted into the gap between the step portion 44 and the substrate 30. Therefore, an air flow path 90 is formed between the substrate 30 and the sealing member 60.

[0033] The sealing member 60 also has a flange 64 that protrudes outward beyond the side wall of the housing 40. The flange 64 exposes the through-hole 61 at a position on the front side of the display device 100. The flange 64 is located outside the first through-hole 41 and functions to collect sound. In this embodiment, the sealing member 60 is sandwiched between the substrate 30 and the housing 40 so as to form an air flow path 90 between the substrate 30 and the sealing member 60. The air flow path 90 extends from an opening formed by the first through-hole 41 and the sealing member 60 to the second through-hole 31. In this embodiment, the first through-hole 41 and the through-hole 61 cooperate to form the air flow path 90 to the second through-hole 31.

[0034] In the display device 100 of this embodiment, too, the substrate 30 is not disposed parallel to the display panel 10 within the housing 40. Specifically, the substrate 30 is disposed within the housing 40 along an imaginary plane including the width and thickness directions of the display panel 10. This allows the height of the housing 40 to be reduced. This also allows the height of the frame 20 to be reduced. As a result, the height of the display device 100 excluding the stand 120, i.e., the height of the display panel 10, can be reduced. Furthermore, the height of the sound collection unit 21, which is disposed outside the frame 20 surrounding the display panel 10 and protrudes forward from the lower side of the display panel 10, is reduced. This reduces the protrusion of the lower portion of the display panel 10, thereby improving the overall design of the display device 100. Furthermore, the housing 40 covering the sound collection unit 21 can be made smaller, thereby reducing the weight of the entire display device 100.

[0035] In this embodiment as well, the air flow path 90 formed by the through hole 61 has a tapered shape (part of the through hole 61) that narrows as it approaches the second through hole 31. Therefore, in order to improve the sound collection performance of the microphone 50, there are few portions where the cross-sectional area of ​​the air flow path 90 changes extremely greatly. In other words, there are many portions where the cross-sectional area of ​​the air flow path 90 changes continuously. As a result, the shape of the air flow path 90 is prevented from adversely affecting sound collection as much as possible.

[0036] Also in this embodiment, part of the tapered shape of the air flow path 90 is formed by making part of the sealing member 60 into an inclined surface. Therefore, the tapered shape can be formed by utilizing the shape of the sealing member 60.

[0037] In this embodiment, too, air flow path 90 has a shape that allows sound waves to travel in a straight line. This minimizes the generation of turbulence in the flow of sound waves due to the shape of air flow path 90. As a result, microphone 50 can receive sound waves with minimal turbulence.

[0038] Furthermore, sealing member 60 of the present embodiment has corner portion 61A of through hole 61 that forms a bend in air flow path 90. Corner portion 61A has an arc-shaped cross section. This allows the air flow containing sound waves to bend smoothly, reducing the adverse effect of the bend in air flow path 90 on the sound waves received by microphone 50.

[0039] (Embodiment 3) The display device of the third embodiment will be described with reference to Figures 31 to 36. Note that, in the following, description of the same points as those in the display device of the first embodiment will not be repeated. The display device of the present embodiment differs from the display device of the first embodiment in the following points.

[0040] Figures 31 and 32 are a plan view and a bottom view, respectively, of substrate 30 of the present embodiment. Figures 33 to 36 are a plan view of a push switch, a cross-sectional view of a push switch, a cross-sectional view of a slide switch, and a perspective view of a slide switch, respectively, provided on substrate 30 of the present embodiment.

[0041] 31, an upper main surface 30A of the substrate 30 is provided with a light-emitting element 38 for the microphone 50, a power light-emitting diode (LED) 39, and a microphone switch 33. A connector 35, an infrared sensor 36, and an RGB (Red, Green, Blue) sensor 37 are also provided on the upper main surface 30A of the substrate 30. The microphone switch 33 and an advanced conditional access system (A-CAS) 35 are also provided on the upper main surface 30A of the substrate 30. As shown in FIG. 32, a power switch 34 is provided on the lower main surface 30B of the substrate 30.

[0042] As shown in Fig. 33, power switch 34 is positioned between two slits 45 of housing 40 in a plan view. Cantilever beam 40A between two slits 45 is bent when pressed in the direction indicated by the arrow in Fig. 34, and power switch 34 is pressed against substrate 30. This turns power switch 34 ON. As shown in Figs. 35 and 36, microphone switch 33 turns ON when slide switch 80 is slid in the direction indicated by the arrow. [Explanation of symbols]

[0043] 10 Display panel 20 Frame 30 boards 31 Second through hole 40 cabinets 41 First through hole 42 Hook part 43 Slope 50 microphones 60 Sealing member 61 Through hole 61A Corner section 90 Air flow path 95 Gap 100 display device

Claims

1. A display panel; a housing that forms a part of a frame of the display panel and has a first through hole that extends in a thickness direction of the display panel; a substrate disposed within the housing along a lateral direction of the display panel and a direction from the front side to the rear side of the display panel, the substrate having a second through hole extending in a vertical direction of the display panel; a microphone fixed to the substrate so as to face the second through hole; a sealing member that is provided in contact with the housing and the substrate and forms a flow path for air from an external space to the microphone via the first through hole and the second through hole, Display device.

2. the sealing member is sandwiched between the substrate and the housing so as to form a gap between the substrate and the housing; The air flow path extends from the first through-hole to the second through-hole via the gap. The display device according to claim 1 .

3. the microphone is provided on an upper side of the substrate; the second through-hole is positioned below the microphone; the gap exists between the lower surface of the substrate and the housing; The display device according to claim 2 .

4. The first through hole has a relatively large cross-sectional area compared to the second through hole, The air flow path has a tapered shape that narrows as it approaches the second through hole from the first through hole. The display device according to claim 1 .

5. The tapered shape is formed by forming a part of the housing into an inclined surface. The display device according to claim 4 .

6. a part of the tapered shape being formed by forming a part of the sealing member into an inclined surface; The display device according to claim 4 .

7. a flow path from the first through hole to the second through hole includes a straight flow path through which sound waves can travel in a straight line; The display device according to claim 1 .

8. a flange portion located outside the first through hole and functioning to collect sound; The display device according to claim 1 .

9. the sealing member is sandwiched between the substrate and the housing so as to form a gap between the substrate and the sealing member; the air flow path extends from an opening formed by the first through-hole and the sealing member to the second through-hole via the gap; The display device according to claim 1 .

10. the sealing member includes a through hole; the through-hole has a corner portion that forms a bend in the air flow path, The cross section of the corner portion is arc-shaped. The display device according to claim 1 .

11. the sealing member includes a through hole; The first through-hole and the through-hole cooperate with each other to form a flow path for the air to the second through-hole. The display device according to claim 1 .

12. The housing has a hook portion, the hook portion presses the substrate against the housing, whereby the sealing member is sandwiched between the housing and the substrate, and the air flow path is maintained as a sealed space. The display device according to claim 1 .

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